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Five techniques for improving outcomes of hyperopic LASIK.

Roberto Zaldivar1, Susana Oscherow, Harkaran S Bains

  • 1Instituto Zaldivar, Mendoza, Argentina. zaldivar@zaldivar.com

Journal of Refractive Surgery (Thorofare, N.J. : 1995)
|October 11, 2005
PubMed
Summary

Five modifications to hyperopic LASIK surgery improved outcomes. The enhanced protocol led to excellent visual acuity and refractive results with minimal regression in patients with hyperopia.

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Area of Science:

  • Ophthalmology
  • Refractive Surgery
  • Laser Vision Correction

Background:

  • Hyperopic LASIK (laser-assisted in situ keratomileusis) aims to correct farsightedness.
  • Optimizing LASIK protocols is crucial for achieving superior visual outcomes and patient satisfaction.

Purpose of the Study:

  • To evaluate the efficacy of five specific modifications to a hyperopic LASIK protocol.
  • To determine if these changes lead to improved visual quality and refractive accuracy.

Main Methods:

  • Implementation of five protocol changes: nomogram refinements for accommodation, adjusted optical and transition zones (7.0mm/9.5mm), targeted flap diameter (10.5mm), sequential laser ablation interruption, and interface cleaning.
  • Treatment of 43 eyes with hyperopia or hyperopic astigmatism using the NIDEK CXII excimer laser.

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  • Preoperative spherical equivalent refraction averaged +2.28 D.

    • Main Results:

    • Postoperative hyperopic shift remained below 0.50 D from 1 day to 3 months.
    • 93% of patients achieved 20/20 distance best spectacle-corrected visual acuity (BSCVA) by 3 months.
    • 88% of eyes maintained or gained BSCVA lines, with a 11.7% increase in eyes achieving 20/15 vision.

    Conclusions:

    • The five surgical and technical modifications significantly enhance hyperopic LASIK outcomes.
    • The protocol changes result in excellent visual quality and refractive results.
    • A low rate of regression was observed following the modified procedure.